<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Node.nodeType节点类型</title>
</head>
<body>
    <input id="ipt" type="text" placeholder="请输入你的用户名">
    <!--这是一行注释，请勿删除-->
</body>
</html>
<script>
    //文档节点 document 9
    //元素节点 element 1
    //属性节点 Attr 2
    //文本节点 text 3
    //注释节点 comment 8

    let ipt = document.getElementById('ipt')
    console.log(ipt);
    
    let nextNode = ipt.nextSibling.nextSibling
    console.dir(nextNode);

</script>
<style>

</style>